Patents Assigned to Shenzhen Yang Qian Material Application
  • Process of manufacturing core-sheath composite fiber
    Patent number: 7556761
    Abstract: A process of manufacturing core-sheath composite fiber includes the steps of: preparing hollow fiber in a form of filament of which some parts forms communicating pores from an outer surface of the fiber to a hollow portion thereof, or in a form of filament segment with open ends; sealing adjacent porous parts or open ends of the same filament respectively in pressure containers and vacuum containers; adding filling materials into pressure containers, and keeping the porous parts or open ends completely immersed in the filling materials; pressurizing the pressure containers using compressed gas, and evacuating the vacuum containers, then the filling materials being absorbed through the communicating pores or opens into the hollow portion of the fiber. During the process of the present invention to manufacture core-sheath composite fiber, most areas of outer surface of the fiber do not contact the filling materials, thus most areas of the outer surface is clean, which is advantageous for post treating or use.
    Type: Grant
    Filed: May 28, 2004
    Date of Patent: July 7, 2009
    Assignee: Shenzhen Yang Qian Material Application Technology Co., Ltd.
    Inventor: Gong Wenzhong
  • Process of manufacturing core-sheath composite fiber
    Publication number: 20040217511
    Abstract: A process of manufacturing core-sheath composite fiber includes the steps of: preparing hollow fiber in a form of filament of which some parts forms communicating pores from an outer surface of the fiber to a hollow portion thereof, or in a form of filament segment with open ends; sealing adjacent porous parts or open ends of the same filament respectively in pressure containers and vacuum containers; adding filling materials into pressure containers, and keeping the porous parts or open ends completely immersed in the filling materials; pressurizing the pressure containers using compressed gas, and evacuating the vacuum containers, then the filling materials being absorbed through the communicating pores or opens into the hollow portion of the fiber. During the process of the present invention to manufacture core-sheath composite fiber, most areas of outer surface of the fiber do not contact the filling materials, thus most areas of the outer surface is clean, which is advantageous for post treating or use.
    Type: Application
    Filed: May 28, 2004
    Publication date: November 4, 2004
    Applicant: Shenzhen Yang Qian Material Application
    Inventor: Wenzhong Gong